watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [ksoftirqd/1:21] Modules linked in: irq event stamp: 2304565 hardirqs last enabled at (2304564): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (2304564): [] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (2304565): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (2304565): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (2017650): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (2017650): [] __do_softirq+0xc14/0xea0 kernel/softirq.c:600 softirqs last disabled at (2017655): [] run_ksoftirqd+0x68/0x258 kernel/softirq.c:934 CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.1.33-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __list_add include/linux/list.h:73 [inline] pc : list_add_tail include/linux/list.h:102 [inline] pc : list_move_tail include/linux/list.h:230 [inline] pc : fq_pie_qdisc_dequeue+0x3e8/0x8ac net/sched/sch_fq_pie.c:248 lr : __list_add include/linux/list.h:72 [inline] lr : list_add_tail include/linux/list.h:102 [inline] lr : list_move_tail include/linux/list.h:230 [inline] lr : fq_pie_qdisc_dequeue+0x3d4/0x8ac net/sched/sch_fq_pie.c:248 sp : ffff800019c56f80 x29: ffff800019c56ff0 x28: ffff00010eea68e0 x27: ffff00010dcf2ae8 x26: ffff00010dcf2af0 x25: dfff800000000000 x24: ffff00010dcf2ae0 x23: ffff00010eea68d0 x22: 0000000000000040 x21: ffff00010dcf2ae0 x20: ffff00010dcf2ae8 x19: ffff00010dcf2ae0 x18: ffff800019c56c40 x17: 0000000000000000 x16: ffff8000084fa384 x15: 0000000000000100 x14: 0000000000000000 x13: 0000000000000001 x12: ffff0000c0a49bc0 x11: ff8080001071432c x10: 0000000000000000 x9 : ffff80001071432c x8 : 0000000000000000 x7 : ffff80000840686c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff00010dcf2ae0 x1 : ffff00010dcf2ae0 x0 : 0000000000000001 Call trace: __list_add include/linux/list.h:72 [inline] list_add_tail include/linux/list.h:102 [inline] list_move_tail include/linux/list.h:230 [inline] fq_pie_qdisc_dequeue+0x3e8/0x8ac net/sched/sch_fq_pie.c:248 dequeue_skb net/sched/sch_generic.c:292 [inline] qdisc_restart net/sched/sch_generic.c:397 [inline] __qdisc_run+0x204/0x239c net/sched/sch_generic.c:415 __dev_xmit_skb net/core/dev.c:3885 [inline] __dev_queue_xmit+0xe14/0x38d8 net/core/dev.c:4227 dev_queue_xmit include/linux/netdevice.h:3018 [inline] neigh_connected_output+0x2f8/0x38c net/core/neighbour.c:1612 neigh_output include/net/neighbour.h:546 [inline] ip6_finish_output2+0xdb4/0x1a98 net/ipv6/ip6_output.c:134 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline] ip6_finish_output+0x538/0x8c8 net/ipv6/ip6_output.c:206 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip6_output+0x270/0x594 net/ipv6/ip6_output.c:227 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xc30/0x1790 net/ipv6/ndisc.c:508 ndisc_send_rs+0x47c/0x5d4 net/ipv6/ndisc.c:718 addrconf_rs_timer+0x300/0x58c net/ipv6/addrconf.c:3936 call_timer_fn+0x1c0/0xa1c kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x554/0x718 kernel/time/timer.c:1790 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1803 __do_softirq+0x30c/0xea0 kernel/softirq.c:571 run_ksoftirqd+0x68/0x258 kernel/softirq.c:934 smpboot_thread_fn+0x4b0/0x96c kernel/smpboot.c:164 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860